Top plungers "pop" into the t-20 with video

[arp35]

I finally rebuilt the T-20 yesterday and finished installing it into the Hustler. Added all the chains and adjusters. Connected the drive rods to the the u-channels on the T-20. Here is my question...when I push forward on the sticks the top plungers move about a 1/8" then both will suddenly "pop" further in. Are the plungers going to far inside the case and pushing past the o-ring? Or the bands just releasing themselves from the drums? All four bands are new. Prior to rebuilding the T-20, I remember that it did this "pop" back then as well, so it is not a "new" sound since the rebuild. Also during the rebuild I could not get the top plungers to push "by hand" from the inside to the outside in order to put the o-rings on. It was too tight of a fit. But I manage to put the o-rings on and gently push them in without tearing the o-ring. So does anyone know what the "pop" is on the top plungers? Do I need to adjust them so when I push forward they don't get to the point where they "pop"? I don't have the engine installed so I can't drive it to see what the effect is during operation. Please watch the video for a better explanation. Thanks,
Al

[Guy]

Seems like the bolts are threaded out a bit too far. Have you tried to spin an axle or tire and see if the brake band stops it?
On my own note, I just finished rebuilding the T20 in my Hustler 900, and the RH lower plunger seems sticky, or hard.

[Mike]

The pop I believe is caused by the slop in the U-channel design not pushing the plungers in straight? It is noticeable on every T20 that I have driven with the U-channels.

[arp35]

The pop I believe is caused by the slop in the U-channel design not pushing the plungers in straight? It is noticeable on every T20 that I have driven with the U-channels.

So I shouldn't worry about it or probably just wait till I can actually test drive it? To answer "Guy", I am going to get the chains all lined up and then lock the eccentric collars. Once I get it all locked down, I am going to put the wheels/tires on and then it will be easier to test the bands.

[Mike]

It is nothing to worry about. I was trying to search the site for the thread that talked about this before but I can not find it right now. I believe Model Citizen was the one telling us about this and the difference between the U-channel T20 and the older models. If I see it I will link back to it here.

[arp35]

It is nothing to worry about. I was trying to search the site for the thread that talked about this before but I can not find it right now. I believe Model Citizen was the one telling us about this and the difference between the U-channel T20 and the older models. If I see it I will link back to it here.

Thanks Mike... On a different note, I ran the chain over the top of the tension sprockets on both sides leading to the transmission. But I noticed in my older pictures that the chain was actually running under the tensioning sprockets then to the clutch sprockets. Which way is correct or does it not matter?

[Mike]

Chain under the idler sprockets is the stock / correct way.

[arp35]

Chain under the idler sprockets is the stock / correct way.

Ok... I will fix it. By the way, the rebuild on the T-20 was a little more difficult then I expected. Especially toward the end when I had to get the last drum with the gears in the right side. Also, a couple of notes pertaining to your tutorial. You don't mention installing the 1st c-clip (oh jesus clips) on the main shaft. The c-clip should probably follow the installation of the snap ring. Also, my T-20 doesn't use the washers with the dog ears. I am not sure why but the dog ear washers were not designed to work with my T-20. So I used the two large flat washers that were previously on the shaft. Anyway, thanks for taking the time to do your tutorial. I printed it out and followed it page by page but got a little confused about when to install the first c-clip. It may be because you refer to retainer rings twice so I was confused about whether or not you were talking about c-clips or the snap ring. Either way it was tremendously helpful...thanks.

[Model Citizen]

I believe Model Citizen was the one telling us about this and the difference between the U-channel T20 and the older models.

Not sure, but I think this is the link Mike was referring to. Page 29 & 30.

Bridget

http://www.6x6world.com/forums/max-a...ringer-29.html

[Uncle Vin]

Seems like the bolts are threaded out a bit too far. Have you tried to spin an axle or tire and see if the brake band stops it?
On my own note, I just finished rebuilding the T20 in my Hustler 900, and the RH lower plunger seems sticky, or hard.

I agree. the transmission is not adjusted correctly. In fact, I hope your plungers are not going in too far, If they are, you could tear an o-ring. Re-read the adjustment section of the online re-build manual. On a side note, it would be very helpful if someone posted a video on how to properly adjust the T-20. It took a long time for me to figure it out. Uncle Vin